blockader


block·ade

B0329100 (blŏ-kād′)n.1. The isolation of a nation, area, city, or harbor by hostile ships or forces in order to prevent the entrance and exit of traffic and commerce.2. The forces used to effect this isolation.tr.v. block·ad·ed, block·ad·ing, block·ades To set up a blockade against: blockaded the harbor.
[Probably block + -ade (as in barricade).]
block·ad′er n.